3442320221 has 4 divisors (see below), whose sum is σ = 3442447932. Its totient is φ = 3442192512.

The previous prime is 3442320209. The next prime is 3442320223. The reversal of 3442320221 is 1220232443.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 305760196 + 3136560025 = 17486^2 + 56005^2 .

It is a cyclic number.

It is not a de Polignac number, because 3442320221 - 2¹⁰ = 3442319197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3442320223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5876 + ... + 83181.

It is an arithmetic number, because the mean of its divisors is an integer number (860611983).

Almost surely, 2^3442320221 is an apocalyptic number.

It is an amenable number.

3442320221 is a deficient number, since it is larger than the sum of its proper divisors (127711).

3442320221 is an equidigital number, since it uses as much as digits as its factorization.

3442320221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127710.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 3442320221 is about 58671.2895801686. The cubic root of 3442320221 is about 1509.9077792604.

Adding to 3442320221 its reverse (1220232443), we get a palindrome (4662552664).

The spelling of 3442320221 in words is "three billion, four hundred forty-two million, three hundred twenty thousand, two hundred twenty-one".